Master Microservices with Spring Boot and Spring Cloud - Step 13 – Understanding Kubernetes Architecture – Master Node a

The video tutorial provides an in-depth look at the components of Kubernetes master and worker nodes. It explains the roles of etcd, API server, scheduler, and controller manager in the master node, and the functions of cubelet, cube proxy, and container runtime in the worker nodes. The tutorial also addresses common questions about Kubernetes, such as the role of the master node and the compatibility of Docker containers. Finally, it demonstrates how to check the status of Kubernetes components.

What is the primary function of the etcd component in a Kubernetes master node?

• To store the desired state of Kubernetes resources

• To manage network traffic between nodes

• To schedule pods onto nodes

• To run user applications

Which component in the master node processes changes made through kubectl or cloud interfaces?

• Kubelet

• API Server

• Controller Manager

• Scheduler

What is the role of the scheduler in a Kubernetes cluster?

• To store configuration changes

• To expose services

• To schedule pods onto nodes

• To manage the health of the cluster

Which component on the worker node is responsible for monitoring node status and reporting back to the master node?

• Kubelet

• Kube-proxy

• API Server

• Container runtime

What is the function of the kube-proxy component in a worker node?

• To store the desired state of applications

• To expose services and manage network traffic

• To schedule pods onto nodes

• To manage container runtimes

Can Kubernetes run containers other than Docker?

• No, only Docker containers are supported

• Yes, any OCI-compliant container runtime is supported

• Yes, but only on specific cloud providers

• No, Kubernetes has its own container runtime

What happens to applications if the master node in a Kubernetes cluster goes down?

• The entire cluster shuts down

• Applications are automatically migrated to another cluster

• Applications continue to run, but no changes can be made

• All applications stop running